I drop marbles, stones, etc. into a large aluminum pan of flour. Messy,
but works well. As an added bonus, tho goofy kids like to put their face
in the stuff! It's a guy thing I guess!

tap-l@listproc.appstate.edu writes:
>Hello Tap'l-ers,
>
>I have a safety question for you. In the past we have performed a
>cratering formation lab by dropping metal balls into a box of sand. The
>sand that we have found to produce the best results was silica sand. On
>acquiring another 100lb bag of the stuff, I found a rather large warning
>label about possible health problems caused by the sand. Does anyone
>else use silica sand or have any information on the dangers of using it
>in a two hour lab? Also, does anyone else perform cratering labs with a
>different material?
>
>Thanks for all your valued help. -Andy.
>
>******************************************
>Andy Smith
>Lab Supervisor/ Part-time Instructor
>DePauw University Physics
>Greencastle, IN
>******************************************
From frysingerj@cofc.edu Tue Sep 9 12:11:43 2003
From: "James R. Frysinger"
Reply-To: frysingerj@cofc.edu
Organization: College of Charleston
To: tap-l@listproc.appstate.edu
Subject: Re: Silica Sand Safety
Date: Tue, 9 Sep 2003 12:08:43 -0400
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